State Environmental Police stopped a pickup truck driven by Mr. Dickson on Oct. 5 for allegedly speeding on a road leading out of Hodges Village Dam in Oxford. The smell of marijuana led to a search that uncovered the drug, a handgun, ammunition, a digital scale and $825 cash, according to a police report.

Mr. Dickson, 19, pleaded not guilty to possession to distribute marijuana, possessing a firearm without a firearm identification card, improper driving and speeding.

Mr. Patrock was his passenger.

The judge found Mr. Dickson not responsible for the moving violations.